find the area of an area of an equilateral triangle (regular 3-gon) with the given measurement 9-inch perimeter. A=sq. in.

Question

Mathematics

Obrien

25 November, 02:17

find the area of an area of an equilateral triangle (regular 3-gon) with the given measurement 9-inch perimeter. A=sq. in.

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Answers (1)

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Aden Fitzgerald · Answer 1

Area = side^2 * sqrt (3) / 4

If 9 inch perimeter then side = 3

Area = 3^3 * sqrt (3) / 4

Area = (9 / 4) * sqrt (3)

Area = 3.897114317 square inches